Juve's loss to Sampdoria left the Italian champions four points off Serie A leaders Napoli and Allegri expects to see greater resolve on Wednesday.

"We have lost two matches in Serie A so I can say that we need to improve our attitude and mentality, especially in the defence, and we need to find the right balance in order to bring the results home," he said.

"Good performances can't always be maintained, so the result is more important than how you play."